Films: Killdozer! (1974)
Height/Weight: That of an average bulldozer.
Summary: You can possess anything you want, right? So if that's true, why in the whole mother of f*ck did you possess one of the slowest vehicles around?! The logic, there is none. Just accept it, y'all.
History: A malevolent spiritual alien came to Earth in a meteor. After landing on an African island, the alien took an interest in some of the construction equipment there. It went with a Caterpillar D9 bulldozer, and began carving a path of destruction. Really slow destruction.
Notable Kills: Nothing special.
Final Fate: Eventually, Killdozer is lead off into the way of an electrical generator. The sheer shock is enough to exorcise the alien from the machine, and fizzle it out.
Scariness Factor: 1.5-Too big for ambush, too slow for pursuit. We cannot state how truly awful this decision was on the alien's part. The only thing dumber than this would be if a possessed piece of bedroom furniture was the vil-oh wait...
Trivia: -An 80's rock band from Wisconsin is named "Killdozer".
-Bulldozers have their beginnings in the 20's, known as "tractor attachments". Their treaded movement and versatility was what inspired the invention of the WWI armored tank.